Abstract: This study examined the newly proposed indices for estimating finger vascular tone, which can be obtained from near infrared transmittance photoplethysmographic recordings; normalized pulse volume (NPV) and blood volume (BV). They were recorded for seven male and two female students under continuous infusion of and recovery from propofol. Concomitant hemodynamic measurements were made with a non-invasive impedance cardiograph and a continuous blood pressure monitor. Normalized pulse volume showed no apparent dose-dependency and was negatively correlated with total peripheral resistance. In contrast, BV increased dose-dependently with propofol concentration and was negatively correlated with cardiac preload index (PLI) and with stroke volume (SV) at higher concentrations. The supplementary structural equation modeling procedure effectively illustrated causal relationships between BV, PLI and SV. In conclusion, the present data suggest that NPV and BV independently reflect arterial and venous tone in the finger tip, respectively. Although the underlying mechanisms remain unclear, BV is more sensitive to vascular dilation under propofol anesthesia. 相似文献
Facial expressions serve as cues that encourage viewers to learn about their immediate environment. In studies assessing the influence of emotional cues on behavior, fearful and angry faces are often combined into one category, such as "threat-related," because they share similar emotional valence and arousal properties. However, these expressions convey different information to the viewer. Fearful faces indicate the increased probability of a threat, whereas angry expressions embody a certain and direct threat. This conceptualization predicts that a fearful face should facilitate processing of the environment to gather information to disambiguate the threat. Here, we tested whether fearful faces facilitated processing of neutral information presented in close temporal proximity to the faces. In Experiment 1, we demonstrated that, compared with neutral faces, fearful faces enhanced memory for neutral words presented in the experimental context, whereas angry faces did not. In Experiment 2, we directly compared the effects of fearful and angry faces on subsequent memory for emotional faces versus neutral words. We replicated the findings of Experiment 1 and extended them by showing that participants remembered more faces from the angry face condition relative to the fear condition, consistent with the notion that anger differs from fear in that it directs attention toward the angry individual. Because these effects cannot be attributed to differences in arousal or valence processing, we suggest they are best understood in terms of differences in the predictive information conveyed by fearful and angry facial expressions. 相似文献
Dual competition framework (DCF) posits that low-level threat may facilitate behavioral performance by influencing executive control functions. Anxiety is thought to strengthen this effect by enhancing threat's affective significance. To test these ideas directly, we examined the effects of low-level threat and experimentally induced anxiety on one executive control function, the efficiency of response inhibition. In Study 1, briefly presented stimuli that were mildly threatening (i.e., fearful faces) relative to nonthreatening (i.e., neutral faces) led to facilitated executive control efficiency during experimentally induced anxiety. No such effect was observed during an equally arousing, experimentally induced happy mood state. In Study 2, we assessed the effects of low-level threat, experimentally induced anxiety, and individual differences in trait anxiety on executive control efficiency. Consistent with Study 1, fearful relative to neutral faces led to facilitated executive control efficiency during experimentally induced anxiety. No such effect was observed during an experimentally induced neutral mood state. Moreover, individual differences in trait anxiety did not moderate the effects of threat and anxiety on executive control efficiency. The findings are partially consistent with the predictions of DCF in that low-level threat improved executive control, at least during a state of anxiety. 相似文献
Journal of Business and Psychology - Building on trait activation and attention capacity theories, we hypothesized and tested the moderating effect of task variety on the relationship between... 相似文献
Objective: This study was to evaluate the effects of psychosocial interventions on survival in adult patients with cancer.
Method: MEDLINE via PubMed, Cochrane Library CENTRAL, CINAHL, and Korean electronic databases (September 2014) were searched. Methodological quality was assessed using Cochrane’s Risk of Bias for randomized studies. The RevMan 5.3 program of the Cochrane library was used for data analysis.
Results: Fifteen randomized controlled trials met the inclusion criteria, with a total of 2940 participants. Overall, psychosocial interventions was not associated with better survival (HR = .83, 95% CI [.68, 1.10], p = .06, I2 = 64%). In subgroup analysis, based on six trials with 1448 subjects, psychoeducational interventions for cancer patients with non-metastatic at intervention implementation resulted in a 41% reduction in the risk of dying of cancer (HR = .59, 95% CI [.49, .71], p < .001, I2 = 0%). For psychoeducational intervention, significant survival benefit were found when health staff delivered the intervention and at a follow-up time of more than 10 years.
Conclusions: Use of psychoeducational interventions for cancer patients at early stage appeared to have beneficial effects on survival, preferably for delivering of health staff. However, conduct of further psychosocial studies with adequate power will lead to better understanding of the effects of treatments on survival outcome. 相似文献
Spiritual well-being has been shown to reduce suicidal behavior, depressive symptoms, and hopelessness. Thwarted interpersonal needs have been shown to increase risk of suicidal behavior. This paper aims to explore the interrelationships among spiritual well-being, thwarted interpersonal needs, and negative outcomes including suicidal ideation, hopelessness, and depressive symptoms among African American women. Sixty-six African American women (M = 36.18; SD = 11.70), from a larger study of women who had experienced interpersonal violence within the past year, completed self-report questionnaires. Mediation analyses revealed that thwarted belongingness, but not perceived burdensomeness, significantly mediated the relations between spiritual well-being and the three outcomes. This study provides the first examination of the role of thwarted interpersonal needs on the link between spiritual well-being and negative psychological outcomes. Spiritual well-being serves a protective role against feelings of social isolation, which may reduce one’s risk of negative psychological outcomes. Treatments that bolster a sense of spirituality and social connectedness may reduce suicidal ideation, hopelessness, and depressive symptoms. 相似文献
This study explores two issues concerning the relationships between personality, meta-mood experience, life satisfaction,
and anxiety. First, it explored the incremental value of Extraversion, Agreeableness, Conscientiousness, Neuroticism, and
Openness to Experience in predicting the three components of meta-mood experience (that is, attention to feelings, emotional
clarity, clarity of feelings and mood repair), after controlling for demographic variables across Australia and Singapore.
Second, it explored the incremental value of the three meta-mood experience components in predicting life satisfaction and
anxiety, after controlling for demographic variables and personality variables across the two countries. One hundred and eighty
nine tertiary students from Australia and 243 tertiary students from Singapore participated in this study. First, hierarchical
regression analyses for both samples suggested that Agreeableness and Neuroticism are the two most important personality predictors
of meta-mood experience, emotional attention, and emotional repair. Second, hierarchical regression analyses for both samples
suggested that emotional repair was a significant predictor for life satisfaction and anxiety, even after controlling for
demographic variables and personality variables. These results have implications for therapeutic interventions with life satisfaction
versus anxiety.
Funding for this research is facilitated partially by a research grant from the National Institute of Education. 相似文献